if you want to pass POST variables, you have to use a HTML Form:
<form action="http://localhost:8080/login" method="POST" target="_blank">
<input type="text" name="cid" />
<input type="password" name="pwd" />
<input type="submit" value="open" />
</form>
or:
if you want to pass GET variables in an URL, write them without single-quotes:
http://yourdomain.com/login?cid=username&pwd=password
here's how to create the string above with javascrpt variables:
myu = document.getElementById('cid').value;
myp = document.getElementById('pwd').value;
window.open("http://localhost:8080/login?cid="+ myu +"&pwd="+ myp ,"MyTargetWindowName");
in the document with that url, you have to read the GET parameters. if it's in php, use:
$_GET['username']
be aware: to transmit passwords that way is a big security leak!
Answer from Roman Abt on Stack OverflowHi, I'm trying to pass two variables to an html page by opening the page using window.open("myfile.html"), I know this: window.open("myfle.html", value) works for passing one variable but it doesn't work for multiple variables. I tried query string but I couldn't make it work. Thanks.
Videos
if you want to pass POST variables, you have to use a HTML Form:
<form action="http://localhost:8080/login" method="POST" target="_blank">
<input type="text" name="cid" />
<input type="password" name="pwd" />
<input type="submit" value="open" />
</form>
or:
if you want to pass GET variables in an URL, write them without single-quotes:
http://yourdomain.com/login?cid=username&pwd=password
here's how to create the string above with javascrpt variables:
myu = document.getElementById('cid').value;
myp = document.getElementById('pwd').value;
window.open("http://localhost:8080/login?cid="+ myu +"&pwd="+ myp ,"MyTargetWindowName");
in the document with that url, you have to read the GET parameters. if it's in php, use:
$_GET['username']
be aware: to transmit passwords that way is a big security leak!
Please find this example code, You could use hidden form with POST to send data to that your URL like below:
function open_win()
{
var ChatWindow_Height = 650;
var ChatWindow_Width = 570;
window.open("Live Chat", "chat", "height=" + ChatWindow_Height + ", width = " + ChatWindow_Width);
//Hidden Form
var form = document.createElement("form");
form.setAttribute("method", "post");
form.setAttribute("action", "http://localhost:8080/login");
form.setAttribute("target", "chat");
//Hidden Field
var hiddenField1 = document.createElement("input");
var hiddenField2 = document.createElement("input");
//Login ID
hiddenField1.setAttribute("type", "hidden");
hiddenField1.setAttribute("id", "login");
hiddenField1.setAttribute("name", "login");
hiddenField1.setAttribute("value", "PreethiJain005");
//Password
hiddenField2.setAttribute("type", "hidden");
hiddenField2.setAttribute("id", "pass");
hiddenField2.setAttribute("name", "pass");
hiddenField2.setAttribute("value", "Pass@word$");
form.appendChild(hiddenField1);
form.appendChild(hiddenField2);
document.body.appendChild(form);
form.submit();
}
The simple answer is yes. But make it a function that calculates those values when called. In other words:
let helpDimensions=function (w,h,l,t) {
return "width="+(w||findWidth())+", height="+h||findHeight()+", left="+(l||findLeft())+", top="+(t||findTop());
}
//this lets you pass a width, height, left, and top to override the calculated dimensions.
/*you will need to establish a findWidth(), findHeight(), findLeft(), and findTop functions or include them inline like:
return "width="+window.innerWidth*0.8+", height="+window.innerHeight*0.8+", left="0.1*window.innerWidth+", top="+window.innerHeight*0.1;
*/
/*then just perform function call like this:
window.open(url, title, helpDimensions()); to calculate the correct dimensions each time
*/
Also, establish a click handler on an element like this:
$("#someelement").on("click", function (e) {
e.preventDefault();
window.open("test.html","test", helpDimensions());
});
using jquery to set the onClick attribute of an existing element is a bad idea.
Also make sure that all of this is enclosed in an Immediate Invoked Injection Function or IIIF like this:
$(function () {
//define your helpDimensions function to calculate dimensions dynamically
//define your click event handler
});
//this ensures that it is not called until everything is loaded.
Hope this helps.
Here’s a great website for calculating dimensions and working with the window reference object to ensure that your content goes into the correct window (which can be reused if needed):
xtf.dk
Center a new popup window even on dualscreen with javascript
function PopupCenter(url, title, w, h) { // Fixes dual-screen position Most browsers Firefox var dualS...
I have a window.open command as follows:
$('#documentation_href').attr('onclick', "window.open('../help.php#Sale_Records','Help','width=1800,height=900,top=100,left=200')");
This works fine on my desktop but I’m sure the width and height will be too big for some computers so I would like to vary the parameters depending on the screen height.
I’ve successfully got some code to calculate the ideal values and have placed them into a parameter - the values vary depending on the screensize.
I’ve set this parameter as follows:
help_dimensions = 'width=' + help_width + ',height=' + help_height + ',left=' + help_left + ',top=' + help_top;
But I would like to know how I can use the parameter help_dimensions in my window.open command instead of the hardcoded values.
@nrgfusion
Use window.open():
<a onclick="window.open(document.URL, '_blank', 'location=yes,height=570,width=520,scrollbars=yes,status=yes');">
Share Page
</a>
This will create a link titled Share Page which opens the current url in a new window with a height of 570 and width of 520.
Just use window.open() function? The third parameter lets you specify window size.
Example
var strWindowFeatures = "location=yes,height=570,width=520,scrollbars=yes,status=yes";
var URL = "https://www.linkedin.com/cws/share?mini=true&url=" + location.href;
var win = window.open(URL, "_blank", strWindowFeatures);
Instead of writing a form into the new window (which is tricky to get correct, with encoding of values in the HTML code), just open an empty window and post a form to it.
Example:
<form id="TheForm" method="post" action="test.asp" target="TheWindow">
<input type="hidden" name="something" value="something" />
<input type="hidden" name="more" value="something" />
<input type="hidden" name="other" value="something" />
</form>
<script type="text/javascript">
window.open('', 'TheWindow');
document.getElementById('TheForm').submit();
</script>
Edit:
To set the values in the form dynamically, you can do like this:
function openWindowWithPost(something, additional, misc) {
var f = document.getElementById('TheForm');
f.something.value = something;
f.more.value = additional;
f.other.value = misc;
window.open('', 'TheWindow');
f.submit();
}
To post the form you call the function with the values, like openWindowWithPost('a','b','c');.
Note: I varied the parameter names in relation to the form names to show that they don't have to be the same. Usually you would keep them similar to each other to make it simpler to track the values.
Since you wanted the whole form inside the javascript, instead of writing it in tags, you can do this:
let windowName = 'w_' + Date.now() + Math.floor(Math.random() * 100000).toString();
var form = document.createElement("form");
form.setAttribute("method", "post");
form.setAttribute("action", "openData.do");
form.setAttribute("target", windowName);
var hiddenField = document.createElement("input");
hiddenField.setAttribute("type", "hidden");
hiddenField.setAttribute("name", "message");
hiddenField.setAttribute("value", "val");
form.appendChild(hiddenField);
document.body.appendChild(form);
window.open('', windowName);
form.submit();
According to the API specifications of Window.open(), you specify the window features in the 3rd parameter. Therefore, you need to set the 2nd parameter, otherwise whatever you specify in the 2nd parameter will be interpreted as the window name.
you can pass _blank instead of myWindow.
